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/*
* Copyright 2016 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "common.h"
#include <assert.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <limits.h>
#if COMPILER_IS_MSVC
#include <fcntl.h>
#include <io.h>
#include <stdlib.h>
#define PATH_MAX _MAX_PATH
#endif
namespace wabt {
Reloc::Reloc(RelocType type, size_t offset, uint32_t index, int32_t addend)
: type(type), offset(offset), index(index), addend(addend) {}
const char* g_kind_name[] = {"func", "table", "memory", "global"};
WABT_STATIC_ASSERT(WABT_ARRAY_SIZE(g_kind_name) == kExternalKindCount);
const char* g_reloc_type_name[] = {"R_FUNC_INDEX_LEB",
"R_TABLE_INDEX_SLEB",
"R_TABLE_INDEX_I32",
"R_MEMORY_ADDR_LEB",
"R_MEMORY_ADDR_SLEB",
"R_MEMORY_ADDR_I32",
"R_TYPE_INDEX_LEB",
"R_GLOBAL_INDEX_LEB",
};
WABT_STATIC_ASSERT(WABT_ARRAY_SIZE(g_reloc_type_name) == kRelocTypeCount);
StringSlice empty_string_slice(void) {
StringSlice result;
result.start = "";
result.length = 0;
return result;
}
bool string_slice_eq_cstr(const StringSlice* s1, const char* s2) {
size_t s2_len = strlen(s2);
if (s2_len != s1->length)
return false;
return strncmp(s1->start, s2, s2_len) == 0;
}
bool string_slice_startswith(const StringSlice* s1, const char* s2) {
size_t s2_len = strlen(s2);
if (s2_len > s1->length)
return false;
return strncmp(s1->start, s2, s2_len) == 0;
}
StringSlice string_slice_from_cstr(const char* string) {
StringSlice result;
result.start = string;
result.length = strlen(string);
return result;
}
bool string_slice_is_empty(const StringSlice* str) {
assert(str);
return !str->start || str->length == 0;
}
bool string_slices_are_equal(const StringSlice* a, const StringSlice* b) {
assert(a && b);
return a->start && b->start && a->length == b->length &&
memcmp(a->start, b->start, a->length) == 0;
}
void destroy_string_slice(StringSlice* str) {
assert(str);
delete [] str->start;
}
Result read_file(const char* filename, char** out_data, size_t* out_size) {
FILE* infile = fopen(filename, "rb");
if (!infile) {
const char format[] = "unable to read file %s";
char msg[PATH_MAX + sizeof(format)];
wabt_snprintf(msg, sizeof(msg), format, filename);
perror(msg);
return Result::Error;
}
if (fseek(infile, 0, SEEK_END) < 0) {
perror("fseek to end failed");
return Result::Error;
}
long size = ftell(infile);
if (size < 0) {
perror("ftell failed");
return Result::Error;
}
if (fseek(infile, 0, SEEK_SET) < 0) {
perror("fseek to beginning failed");
return Result::Error;
}
char* data = new char [size];
if (size != 0 && fread(data, size, 1, infile) != 1) {
perror("fread failed");
return Result::Error;
}
*out_data = data;
*out_size = size;
fclose(infile);
return Result::Ok;
}
void init_stdio() {
#if COMPILER_IS_MSVC
int result = _setmode(_fileno(stdout), _O_BINARY);
if (result == -1)
perror("Cannot set mode binary to stdout");
result = _setmode(_fileno(stderr), _O_BINARY);
if (result == -1)
perror("Cannot set mode binary to stderr");
#endif
}
} // namespace wabt
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